低温贮藏下真空与非真空包装对小麦种子生活力的影响

Influence of Vacuum and Non-vacuum Packing on the Viability of Wheat Seed Stored in Low Temperature

对以铝箔袋真空包装和铝盒非真空包装的89份小麦种子,在-4~0℃的低温种质库中贮藏11年后的贮藏效果进行了研究。从种子贮藏后的发芽率与入库前的初始发芽率差异,2种包装方式的种子年份间、同一年份2种方式间的种子发芽率差异等3个方面探讨了2种包装方式的种子在低温贮藏条件下的贮藏效果。结果表明：通过低温贮藏11年的小麦种子生活力测定,82%的材料在低温保存后其种子平均发芽率高于初始发芽率,而贮藏第10年后发芽率才出现较初始发芽率明显下降;铝箔袋包装的种子发芽率下降幅度小于铝盒包装,且差异达显著水平;铝箔袋真空密封包装的贮藏效果明显好于非真空包装的种子。

Using 89 accessions wheat germplasm stored in-4-0℃ for 11 years as experimental metarials and viability testing as the tool,this paper analyzed the effect of low-temperature storage by comparing the difference of germination percentage between seeds packed in vacuum aluminum foil bags and seeds packed in non-vacuum aluminum boxes.The effect of storage method was analyzed from three aspects：Firstly,the difference of germination percentage between two package methods for seeds stored at low temperature and initial germination percentage before stored.Secondly,the difference of germination percentage of seeds in two package methods among storage years.Thirdly,the difference of germination percentage of seeds between two package methods in the same year.The result showed that the mean germination percentage of 82% stored metarials is higher than the initial germination percentage,while the germination percentages will drop significantly after 10th-year storage,and the decrease rate of seeds packed in aluminum foil bags is less than that of aluminum boxes.Due to the difference of decrease rate has reached significant level,conclusion can be drawn that hermetically storing in aluminum foil bag has obvious better effect than non-hermetically storing for seeds stored.